Valve.



S. M. GUSS, DBOD.

I. 1:. GUSS, ADMINISTRATBIX.

VALVE.

APPLICATION FILED JULY 26,1909.

Patented July 12,1910.

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SAMUEL M. GUSS, 0F READING, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF TOHERBERT S. GUSS, OF READING, PENNSYLVANIA; FLORENCE E. GUSSADMINISTRATRIX OF SAID SAMUEL M. GUSS, DECEASED.

VALVE.

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To all whom it may concern:

Be itknown that I, SAMUEL M. GUSS, a citizen of the United States, and aresident of the city of Reading, in the county of Berks and State ofPennsylvania, have in vented certain new and useful Improvements inValves, of which the following is a specification.

My invention relates to globe-valves or the like in which a separatelyformed seat ing disk or ring is employed in connection with a valve-headadapted to removably hold the same so as to provide for readily renewingit; and it consists in the improved construction of such seating disksor rings as hereinafter fully described in connection with theaccompanying drawings and the novel features of which are specificallypointed out in the claims.

Figure 1 is a sectional view of a portion of a globe valve having myinvention applied thereto. Fig. 2 and Fig. 3 are detail views of myimproved seating disk, and Fig. 4L indicates a modified constructionthereof.

In the drawing 2 indicates a fixed valveseat, 3 a movable valve-stem,and a a valvehead carried by said stem, all of which are of well knownconstruction. The valve head I is formed with a cylindrical recess forreceiving the separately formed seatingdisk or ring 6 which is removablyheld therein by means of a nut 7. Ordinarily this seating-disk or ring 6is made of relatively soft metal, as Babbitt, so as to insure the makingof tight contact with the fixed seat 2, the softer metal readilyadapting itself to the harder seat under the closing pressure applied.In practice however certain defects appear which it is the purpose of myinvention to overcome.

The softer metal in contact with the harder seat 2, has a tendency underthe influence of heat and pressure, to attach itself to the latter so asto leave rough seating surfaces when the valve is forcibly opened. Thecontraction and expansion due to changes of temperature either increasesthis tendency or tends to loosen the joint, so that when the valve isleft closed for a considerable time, gutters are apt to be cut acrossthe bearing faces so as to necessitate repairs. My invention overcomesthese difficulties by providing in a simple manner for Specification ofLetters Patent.

Application filed July 26, 1909.

Patented July 12, 1910.

Serial No. 509,532.

securing requisite elasticity in the structure for insuring properseating of the valve under varying conditions of contraction andexpansion and without incurring any flow of the seating metal. This iseffected by providing a circumferential groove 10 in the seating-disk 6,located about midway of its height and extending approximately parallelwith the fixed seat 2, as shown, so as to partially detach the outer orseating portion 11 of the disk from its inner portion 12. The portion 11is thus enabled to yield under the seating pressure, or as required bycontraction and expansion, so as to readily effect and maintain propercontact with the fixed seat 2. The natural elasticity of the materialused in the seating-disk will obviously permit of such yielding to aconsiderable extent without permanent change of form if it be made ofcomparatively hard metal as my improved construction permits. As shownhowever I provide inlets or ports 13 communicating with said groove 10;and I place in the latter a wall ring 14, filling the groove at theperiphery of the disk; said wall ring serving to prevent undue yieldingof the seating portion 11 of the disk, while the fluid-pressure admittedto the groove 10 gives additional elasticity to it.

Instead of the outer circumferential groove 10 indicated in Figs. 1 and2, an inner circumferential groove, as indicated at 10 Fig. 4, mayobviously be substituted with like effect; the wall ring 1% in eithercase closing the open side of the groove. The condensation of steamadmit-ted to the groove 10 tends to reduce the temperature of theseating disk metal and thus assist in preventing adherence of the softermetal to the seat 2 and in maintaining the elasticity of the seatingaction. Obviously my improvement may be applied to the fixed seat ifdesired in substantially the same manner as in the preferred applicationspecifically shown and described.

What I claim is 1. In a valve the combination with a valve-head having aholding recess, of a seating-disk or ring in said recess formed with acircumferential groove whereby the seating portion thereof is madeelastically yielding and with a fluid-pressure inlet to said groove.

2-. In a valve, a seating-disk or ring formed with a circumferentialgroove whereby the seating portion thereof is made elastically yieldingand having a separately formed wall ring in said groove.

3. In a valve, a seating-disk or ring formed with a circumferentialgroove whereby the seating portion thereof is made elastically-yielding,said disk having a separately formed wall ring in said groove and 1SAMUEL M. GUSS. Witnesses D. M. STEWART, T. G. STEWART.

